手術

1. Origins, structure, and basic meaning

• Structure: 手術 (しゅじゅつ) is a medical operation involving bodily intervention. The examples take patient and surgeon perspectives.
• Basic usage: A father receives knee surgery; a fictional doctor rises after completing a long operation.

2. Common pitfalls and similar expressions

• Treatment received by a patient and procedure completed by a doctor
  • 手術を受ける takes the patient's viewpoint; 手術を終える the operator's. Participant roles differ despite the same object marking.